In my opinion you can, just that the participants are not willing to do so due, in part, to the lack of acceptance of BCP38.

-----
Alain Hebert                                ahebert@pubnix.net   
PubNIX Inc.        
50 boul. St-Charles
P.O. Box 26770     Beaconsfield, Quebec     H9W 6G7
Tel: 514-990-5911  http://www.pubnix.net    Fax: 514-990-9443

On 2020-03-14 07:35, nanog@jack.fr.eu.org wrote:

This is the issue (and the leitmotiv) of forged packets: you cannot
trace their origin in real world situation


On 3/14/20 12:03 PM, Jean | ddostest.me via NANOG wrote:

Hi Bill,

can you post some forged packets please? You can send them offlist if
you prefer.

It seems to be similar to what Octopus experience few weeks ago on this
list.

Thanks

Jean St-Laurent | CISSP #634103